DTU Nutech GM-25-5A beta Multicounter system
|SeaVoX Device Catalogue
|DTU Nutech GM-25-5A
|A laboratory instrument designed to count beta particles emitted by a sample using the Geiger-Muller principle. A steady gas stream of argon (99%) and isobutene or propane (1%) becomes ionised due to beta particle emission from the sample, and the ionised gas particles are collected within a high voltage field, detected as an electric current pulse and recorded as a counting event. A guard counter allows the removal of the cosmic background radiation signal. The instrument is typically placed inside a lead shielding to reduce the ambient background radiation.
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|Technical University of Denmark Centre for Nuclear Technologies
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